Improvement in screw-cafs for cans



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ALEXANDER'N. LAPI'ERRE', OF-NEW YORK, N.

Letters .Patent No. 96,447, dated November 2, 1869.

IMPO'VEMEN T yIIN' SCREW-CAPS FOR CANE.

The Schedule referred to in these Letters Patent an'd making part of the name To all 'whom 'it may concerne Ble it knownthat I, ALEXANDER N. LAPIERRE, of the city of N ew York, in the county and State of New York, have invented a new and limproved Nozzle andl Screw-Gap for Cans; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilledin the art to make and use the saine, reference being had tothe accompanying drawing, forming part ofthis specification.

The drawing represents a "ertical section of my improved nozzle and screw-cap.4

This invention relates to a new method of constructing the nozzles and'caps ot' cans for retaining oil Iand other liquid matter, and has for its object cheapuess of arrangement and convenience ol'operatiou.

'lvhe invention consists- A First, in providing a vent for the discharge and entry of atmospheric air.

Secondly, in the arrangement .of a washer, which is secured 'to the cap,^and closes the vent and nozzle; and,

Finally, in constructing the cap of sheet-metal sides and of a solid-metal head, so as to obtain chcapness and durability, and in making the nozzle of the saine piece ot which the top of. the can is made. l

A, in thc drawing, represents a, sheetxnetal can, of 'suitable construction.

a, is its top plate.

B is the nozzle.

The nozzle is a circular tube projecting from the top plate a, and made of one piece with the saine, by beingstruck up by a suitable die.

` A male screw-thread is formed on the outside of the tube B, either lby being cut directly in the tube, or by heilig formed on a ring, b, that is soldered or otherwise secured'around the nozzie.

C is the screw-cap. It is a sheet-metaljtube, provided, on its inner -side, with a female 'scre\\thread, sothat-it can be itted upon the nozzle B. This inner screw-thread is either cut directly into the body ofthe tube O, or is formed on a ring; c, that is soldered or otluerwise secured into the same.

The top ot' the tube G is closed by a solid metallic plate, d, which is soldered into the tube, or otherwise securely fastened to the same. It has anoteb or a projecting polygonal nipple, so that it can be turned with the cap, by means ofa screw-driver or wrench.

The cap O has, at its lower end, an ,outward-projecting ange, e, which tits upon and covers partof or the entire top plate a ofthe can.

A washer, f, is attached to the under side of this fiange, by having the edge of t-he latter bent around theouter edge of the washer, as shown. The'washer z is thus secured to the cap.

D is a narrow tube projecting from the plate a into the-can, and open atboth ends.

1. The vent-pipe D, provided in a can, A, for the entrance and discharge of air, and to be closed by theA flange e of t-he screw-cap, substantially as herein shown and described. A

2. The screw-cap 0, when iliade of a sheetfmetal tube, containing the flange e and Washenf, :ind of the 4solid-m etal head el, substantially as and for the purpose herein shown and described. ALEX. N. LAPIERRE.

Witnesses:

FRANK BLocKLnY, G. L.- TOPLIFF.

v It serves to let air 'out of the can when the same is being lilled, and to and desire to secure by Let- 

